#include <stdio.h>
#include <unistd.h> // sleep

int main()
{
    while (1)
    {
        printf("pid: %d\n", getpid());
        sleep(1);
    }
    //int a = 10;
    //a /= 0;

    //char* p = NULL;
    //*p = 100;

    return 0;
}


